Hi, I am not basing my argument on Tradition alone, but on Tradition and Scripture. Cf. 2 Tim 2:2.

The Scriptures are clear about the Bodily nature of Communion. Jn 6:

51I am the living bread which came down from heaven.

52If any man eat of this bread, he shall live for ever; and the bread that I will give, is my flesh, for the life of the world.

53The Jews therefore strove among themselves, saying: How can this man give us his flesh to eat?

54Then Jesus said to them: Amen, amen I say unto you: Except you eat the flesh of the Son of man, and drink his blood, you shall not have life in you.

55He that eateth my flesh, and drinketh my blood, hath everlasting life: and I will raise him up in the last day.

56For my flesh is meat indeed: and my blood is drink indeed


Here is St. Cyril Bishop of Jerusalem:

"The bread and the wine of the Eucharist before the holy invocation of the adorable Trinity were simple bread and wine, but the invocation having been made, the bread becomes the body of Christ and the wine the blood of Christ" (Catechetical Lectures 19:7 [A.D. 350]).

"Do not, therefore, regard the bread and wine as simply that; for they are, according to the Master’s declaration, the body and blood of Christ. Even though the senses suggest to you the other, let faith make you firm. Do not judge in this matter by taste, but be fully assured by the faith, not doubting that you have been deemed worthy of the body and blood of Christ. . . . [Since you are] fully convinced that the apparent bread is not bread, even though it is sensible to the taste, but the body of Christ, and that the apparent wine is not wine, even though the taste would have it so, . . . partake of that bread as something spiritual, and put a cheerful face on your soul" (ibid., 22:6, 9).